1963 Chevrolet Chevy II Engine: 4.6L V8; Standard Rotation; Standard Duty Thermal Fan Clutch;. 1964 Chevrolet Chevy II Engine: 3.8L L6; Standard Rotation; Standard Duty Thermal Fan Clutch;. 1964 Chevrolet Chevy II Engine: 4.6L V8; Standard Rotation; Standard Duty Thermal Fan Clutch;.